Universal Compound Growth Calculator

Calculate the power of compound interest with withdrawals for your long-term investments

Investment Parameters

Initial Investment i

Regular Contribution i

Monthly

Yearly

Annual Interest Rate (%) i

Investment Period (20 Years) i

Compounding Frequency i

Results Summary

Final Balance

¤0.00

Total Contributions

¤0.00

Total Interest Earned

¤0.00

Rule of 72 (Est. Doubling Time) ?

N/A

Enable Withdrawal Planning

Withdrawal Planning

Start Withdrawals After Year i

Withdrawal Amount i

Monthly

Yearly

Growth Over Time

Growth Over Time Data

Year-by-year growth data including final balance for each year.
Year	Balance

Learn About Compound Interest

Compound interest is the interest on a loan or deposit calculated based on both the initial principal and the accumulated interest from previous periods.

The formula for compound interest on a lump sum is:

A = P(1 + r/n)^nt

Where:

A = Final amount
P = Principal (initial investment)
r = Annual interest rate (in decimal form)
n = Number of times interest compounds per year
t = Time in years

With regular contributions, the calculation becomes more complex. This calculator simulates the growth year-by-year for accuracy.

The Rule of 72 is a simple way to estimate how long an investment will take to double. Divide 72 by the annual rate of return to get the approximate number of years.